99944409 has 8 divisors (see below), whose sum is σ = 133313472. Its totient is φ = 66602480.

The previous prime is 99944393. The next prime is 99944431. The reversal of 99944409 is 90444999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99944409 - 2⁴ = 99944393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99944459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4492 + ... + 14834.

It is an arithmetic number, because the mean of its divisors is an integer number (16664184).

Almost surely, 2^99944409 is an apocalyptic number.

It is an amenable number.

99944409 is a deficient number, since it is larger than the sum of its proper divisors (33369063).

99944409 is a wasteful number, since it uses less digits than its factorization.

99944409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13567.

The product of its (nonzero) digits is 419904, while the sum is 48.

The square root of 99944409 is about 9997.2200635977. The cubic root of 99944409 is about 464.0728572301.

The spelling of 99944409 in words is "ninety-nine million, nine hundred forty-four thousand, four hundred nine".